Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8930718 | Apparatus for and a method of providing content data | Adrian Aylward | 2015-01-06 |
| 7865057 | Method and apparatus for conveying rights across an analog video interface | — | 2011-01-04 |
| 7624282 | Method and apparatus for DVD copy protection with selective data pattern insertion | — | 2009-11-24 |
| 7274790 | Scrambling and descrambling a high definition TV signal | John O. Ryan, James R. Holzgrafe | 2007-09-25 |
| 7124114 | Method and apparatus for determining digital A/V content distribution terms based on detected piracy levels | — | 2006-10-17 |
| 6950520 | Method and apparatus for carrying data in a video signal so that the data is not recorded | John O. Ryan, James R. Holzgrafe | 2005-09-27 |
| 6931536 | Enhanced copy protection of proprietary material employing multiple watermarks | — | 2005-08-16 |
| 6701062 | Generational copy control of a video signal | Johan Cornelis Talstra, Kordian Kurowski, David C. Collier, William J. Wrobleski, James R. Holzgrafe +4 more | 2004-03-02 |
| 6542609 | Method and apparatus for scrambling a high definition television signal | John O. Ryan, James R. Holzgrafe | 2003-04-01 |